Shiroiwa Mizuki, who has been repressed by his mother for any sexual acts, has his body being molested by a stranger on the same train while attending school. Mizuki accepted the act even though he was able to avoid it. One day, Mizuki finds the man-Shinobu Kurose and offers a deal. "... I want you to violate me more." Shinobu responds to the "command" of a masochistic Mizuki. However, in the days of indulging in immorality and drowning in desire, Shinobu, who was emotionless, gradually began to change. A fresh and beautiful Immorality Boys Love for a man with a dark past and a boy who suffers from sexual repression.